Controller of steering engine

Abstract

The invention provides a controller of a steering engine. The controller comprises a zeroing circuit, a steering engine feedback position circuit, a target signal conditioning circuit, a target angle and actual angle processing circuit, a direction control circuit, a signal selecting circuit, a PWM (Pulse-Width Modulation) signal generating circuit, a PID (Proportion Integration Differentiation) conditioning circuit, a carrier signal generating circuit, a signal isolating circuit, an over-current protecting circuit, a current sampling circuit, a power pipe driving circuit, an H bridge inverter circuit, a current sampling circuit and a power supply circuit. According to the controller of the steering engine provided by the invention, the common elements are adopted, so that the cost is reduced; with the adoption of the mature technology, the reliability can be ensured; and a PID control technology, a PWM control technology, a target signal and actual signal processing technology, an over-current protecting circuit technology, an isolating technology and the like are achieved by adopting discrete electronic elements; and as an experiment shown, the controller of the steering engine has the characteristics of being quick in response and good in tracking and meets the performance of controlling the steering engine.

Description

technical field [0001] The invention relates to the technical field of steering gear control, in particular to a steering gear controller. Background technique [0002] The steering gear is mainly composed of a rudder plate, a reduction gear set, a position feedback potentiometer, a DC motor and a control circuit board. Its working principle is as follows: the control circuit board of the steering gear receives the control signal (PWM signal with a period of 20ms) from the signal line, controls the rotation of the motor, and the motor drives a series of gear sets, which are transmitted to the output steering wheel after deceleration. The output shaft of the steering gear is connected to the position feedback potentiometer. When the steering wheel rotates, the position feedback potentiometer is driven. The potentiometer will output a voltage signal to the control circuit board for feedback, and then the control circuit board determines the motor according to its position. Th...

AI Technical Summary

Problems solved by technology

[0003] At present, the steering gear controller is mainly a digital steering gear controller with DSP as the core, but the DSP chip is a non-domestic component, and the purchase, selection, and technical exchange of non-domestic electronic components are often affected by political, economic and other factors , and when the current DSP chip is applied to some electromagnetic interference occasions that interfere greatly with digital signals, interference often occurs

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